Users can rate their own posts according to levels of adult content. Mine are mostly X-rated; some posts of shirtless hot celebrities. But yeah, it's replacing old Tumblr. Not a lot of new content; you'll recognize a lot of the same porn shots and animated GIFs of sex. Start following different users to get what you want in your feed, just like Tumblr.
Attached, a screencap of my recent posts. I hope y'all like!
And no, I won't post Chris H stuff. He personally asked me to remove an old Tumblr post (some of the full erect cock pics) that I naively hashtagged with his name, then shared on Twitter. As thanks for deleting them, he sent me a private bulge shot (It's been shared online elsewhere since then).